Centrifugal separator.



PATE'NTBD MAY 6, 1903.

0. ANDERSON. GENTRIFUGAL SEPARATOR.

APPLICATION FILED DEC. 20, 1900.

N0 MODEL.

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WITNESSES: INVENTOR @ammmmmmmmnm ATTORNEYS,

cams PETERS no. Pnom um No. 727,052. Patented May 5, 1903.

UNITE STATES ATENT Fries.

OSCAR ANDERSON, OF KEARNEY, NEW JERSEY, ASSIGNOR TO NATIONAL DAIRY MACHINE COMPANY, A CORPORATION OF NEW JERSEY.

CENTRIFUGAL SEPARATOR.

SPECIFICATION i'ormmg part of Letters Patent No. 727,052, dated May 5, 1903.

Application filed December 20, 1900. Serial No. 4:0,494. (No modelJ To all whom it may concern: and outlets e e for the blue milk. At the cen- Be it known that I, OSCAR ANDERSON, acititer of the cover the same is perforated and zen of the United States, residing at Kearney, provided with a central milk-feed tube in the county of Hudson and State of New Jerwhich extends from the central perforation 5 sey, have invented certain new and usefulImin the cover downward near to the bottom of provements in Centrifugal Separators; and I the bowl. Within the said bowl the same is do hereby declare the following to be a full, provided with a liner to facilitate the separaclear, and exact description of the invention, tion of the cream from the blue milk. At such as will enable others skilled in the art to the outer part of the chamber within said to which it appertains to make and use the same, bowl and engaging the inner side walls therereference being had to the accompanying of is arranged a cylindrical creaming-partidrawings, and to letters of reference marked tion f, substantially such as shown in my thereon, which form a part of this .specificaprior patent,above referred to. Said partition. tion is provided with conical perforated pro- X5 This invention relates to certain improvetuberances f, formed by pressing out the tin ments in that class of centrifugal separators or sheet metal of which the partition is conin which is employed a cylinder having prostructed by means of suitable dies, a large tuberances such as shown in my patent dated number of such protuberances being formed February 16, 1897, and numbered 576,994. which intersect or project across the vertical 20 The objects of the present improvements passage g, formed at or near the periphery of are to secure a more perfect separation of the the bowl between said cylindrical partition cream when the milk is passed through the and the inside walls of the bowl, so that the separating devices at a high rate of speed, milk as it flows upward in said passage g is whereby the qualitative and quantitative cafrequently interrupted in its course by said 2 pacities of the separator are increased. protuberances and the particles of butter-fat A further object is to enable a bowl of small in, the blue milk are effectively brought into diameter and such as can be rotated at a high contact with the projecting inclined surfaces rate of speed without an undue expense of of said protuberances. Said inclined surfaces power to effectively separate the cream at a of the, protuberances at the beginning of the 0 rapid rate of flowage through the creaming separating operation immediately gather or devices, and thus effect a saving of power, receive a thin film-like coating of cream, by and to secure other advantages and results, means of which the small cream particles resome of Which may be referred to hereinafter mainingin the blue milk asit flows upward are in connection with the description of the workentrapped or caused to adhere by affinity with 3 5 ing parts. greater certainty and the particles agglomer- The invention consists in the improved cenate with those already on said surfaces,and untrifugal separator and in the arrangements der the high centrifugal force exerted thereon and combinations of parts of the same, all the accumulation ofcream fiows over-said sur- 9c substantially as will be hereinafter set forth faces inward toward the'cream-wa1l,thus very 40 and finally embraced in the clauses of the thoroughly removing eventhe finecream parclaim. ticles from the said blue milk. Within said cyl- Referring to the accompanying'drawings, inderf, having the pressed-out and perforated in which like letters of reference indicate corprotuberances and bearing against the inner 5 responding parts in both figures, Figure 1 is walls of the same, is arranged a vertical series 5 a central vertical sect-ion of the improved sepof sheet-metal annular plates or rings h h h, arator, taken at line a: of Fig. 2; and Fig. 2 is which are annularly bent or corrugated, the a section of the same, taken at line y, Fig. 1. summit or angle of the protuberance or pro- In said drawings, a indicates a suitable jection lying, preferably, concentric with the bowl secured upon a vertical rotary shaft b axis of the plate. The protuberance on one 50 and provided with aremovable covercin any side corresponds with the cavity on the opordinary and suitable manner, the said cover posite side, and the plates may thus be nested, being provided with an exit (I for the cream the protuberances or projection of one annular plate or ring entering the cavity of the next in order, as shown. I prefer to construct the protuberances so they form a continuous circle at the summit or angle and so that the flange-like sides extend continuously at opposite inclinations from said summit to the outer partition, inasmuch as by this construction I secure a greater amount of surface, in practice, cutting the lines of centrifugal force, than I would were the horizontal plates composed of a series or plurality of corrugations, it being understood that in corrugating the metal the angle is usually rounded to prevent rupture, and thus there is found at the said angle a considerable area of surface extending parallel with the lines of force. Said rings are nested one within another, but are separated so as to form narrow or thin flow spaces or passages between. The superposed or nested rings bearing on the inner walls of the cylindrical partition are prevented from spreading under centrifugal strain by said partition, and the said rings nearly fill the space between the said cylinder and the cream-wall formed in vertical line with the cream-exit d. The said rings being V-shaped in cross-section, asindicated in Fig. 1, the narrow passages between said plates are inclined upward and then downward, whereby within a very limited radial distance very long radial flow-spaces will be formed, whereby a long series of such long passages may be formed without unduly extending the length of the bowl. The long flow-spaces giveincreased opportunity for thorough separation.

I prefer at the apices of the lower conical rings to form outlets 2' for the blue milk and cream, said openings being staggered vertically to prevent a direct upflow of blue milk toward its final exit.

In constructing the rings h I prefer to make the flanges h relatively wider than the flanges 71 and the inclinations thereof approach a vertical line more nearly, so that there is a greater creaming-surface near the periphery of the bowl, and near the cream-wall the passages 7t) k k are shorter in radial distance and wider vertically to permit a freedom of flow to the cream.

The several plates comprising the series are suitably held apart by stops m or projections of any proper character and the said rings are prevented from turning axially by means of ribs or stops it in connection with the feedtube.

Having thus described the invention, what I claim as new isl. The improved cream-separator, herein described comprising a rotary bowl, and avertical series of angularly-bent' plates arranged in said bowl with flow-openings formed therein at or near the angles, substantially as set forth.

2. The improved cream-separator herein described comprising a rotary bowl and a vertical series of horizontal rings arranged within the bowl, the broad faces of which annular plates are provided with protuberances on one side and corresponding recesses, on the opposite side, said annular plates having flowopenings at or near their points of extreme projection of the protuberances, substantially as set forth.

3. A liner for cream-separators comprising a vertical series of annular angularly-corrugated plates, provided with perforations at or near their apices, substantially as set forth.

4. The combination with a cream-separator bowl, of a series of annularlycorrugated plates,the protuberances of which extend continuously in a direction concentric with the axis of said annular plates, the continuous sum mit-s of said prot uberances being provided with flowpassages therethrough, substantially as set forth.

5. The improved cream-separator, herein described, comprising a bowl and a series of oppositely-flanged rings nested one within the other and forming oppositely-inclined flowspaces between, the outer inclined flange-like parts of said rings being wider than the inner inclined flange-like parts, substantially as set forth.

6. The improved cream-separator herein described, comprising a rotary bowl having a central feed-tube,a cylindrical partition, having a collection of perforated protuberances and serving asabearing for the inclined plates therein and a vertical series of horizontal plates arranged Within said cylinder, said plates being correspondingly corrugated and nested and the outside flange-like inclined parts having steeper inclinations and wider extensions than the inside flange-like parts and said outside inclined parts engaging said cylindrical partitions at their outer edges, substantially as set forth.

7. The combination with a cream-separator bowl, of a series of annular plates having vertically-extending protuberances, the sides of which are inclined to the radii of the axis of said annular plates and the summits of which have perforations, and a cylindrical partition, having perforations and inward and outward protnberances bearing oppositely on theinner wall of the bowl and upon the inclined parts of the series of plates to hold the latter in place at the location of greater centrifugal force, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 21st dayof November, 1900.

OSCAR ANDERSON.

Witnesses:

CHARLES H. PELL, O. B. PITNEY. 

